Delete parts of Circles/Rectangles?

[rossw71701]

I've drawn a circle and rectangle to make an outline but I need to delete the indicated parts of those objects before I can send it to my Silhouette Cameo 4 to cut out a mask in vinyl.

How do I do that? I have tried googling but nothing seems to work.

[rossw71701]

This is the end result I need to achieve.

[Doug A Roberts]

Select the lines, select the shape builder tool (Shift+M), then alt-drag over the lines you wish to remove.

[rossw71701]

Thanks Doug, but whe I try this it deletes the whole object (I'm using a Mac, btw).

[Doug A Roberts · Accepted solution]

Not sure why you moved the object first? Keep them in your initial arrangement and select everything.